What is every AFC West Division team's record against the over/under line as an underdog in the 2009 season?

Definitions
Team Over Record Over % Under % Total +/-
Kansas City 8-4-2 66.7% 33.3% +4.4
LA Chargers 2-2-0 50.0% 50.0% +3.9
Las Vegas 7-8-0 46.7% 53.3% -2.1
Denver 3-7-0 30.0% 70.0% -4.2